This fixed my Dyson V6 Wireless when nothing else worked. The vacuum cleaner started pulsing a few months ago, I called tech support, they went through all the steps (which are on the website to "fix" the problem) and it was still pulsing and stopped after a few minutes to work. I changed the battery it didn't help so last time I ordered these filters and to my great surprise the vacuum cleaner works like new. Received them within a two day prime period. I'm a happy customer